No-dig technology has been successfully applied in pipeline network construction of municipal engineering. Traditional nodig directional technology is mainly applied in steel pipe with good tensile strength and PE pipe, generally for electric case, telecommunication case and pressure tube with low elevation requirement. But for nonpressure sewage pipe laying, besides strict requirement of elevation, the materials are designed with diversification. According to the characteristics of PE pipe with good flexibility, HDPE pipe with poor tensile and compressive resistance, and pipe jacking construction not suitable for small diameter concrete pipe, no-dig directional technology was applied with good effect.